Katrina at Five: The Lower Ninth Ward

Michael Knight lived those harrowing images so many others remember from Hurricane Katrina: the waters rising and rising, people trapped in their homes racing to their rooftops, crawling through windows to escape Katrina's wrath.

"We've been running," Knight said back in 2005. "I feel like crying. A lot of people just died, bro."

After the pounding winds and hammering rains of Hurricane Katrina slammed into New Orleans, the worst was still yet to come. Flood waters rushed into the Ninth Ward, one of New Orleans' poorest neighborhoods.

The floodwall protecting the Lower Ninth Ward was knocked down by a runaway barge cut loose by the storm. Thousands of residents had to race to their attics and rooftops to escape the rising waters.

"We got up in the roof, all the way to the roof, and, and water came, it had just, just open up," one man told ABC News in 2005.

Some were lucky, rescued by helicopters. Others had to rely on the kindness of neighbors -- neighbors like Knight.

Lower Ninth Ward Hit Hardest By Katrina

Five Years Later: Katrina Hero 'Glad' To be Home

Of all the places in New Orleans hit hard by Hurricane Katrina, none suffered more than the lower ninth ward. In 2005, Knight and another Lower Ninth resident, Harry Pryor, paddled through the flooded streets looking for signs of life. They made it their mission to rescue their marooned neighbors.

"See where them holes are at in the rooftops?" Pryor said. "We cut them out here."

Pryor and Knight had to hack their way through the roofs to free some people. They pulled them from their homes, ferrying them first to a small church in the neighborhood, and then moving them to dry land.